Taco 2400 Series High Capacity Circulators are specifically designed for quiet, efficient, dependable operation in a wide range of medium to high flow/head hydronic heating, chilled water cooling and hot water recirculation applications. The spacesaving, close-coupled, maintenance free motor with permanently lubricated, sealed-for- life bearings, Noryl impeller and durable, carbon/silicon-carbide mechanical sealprovide unmatched reliability.The compact 2400 Series High Capacity Circulators are for use in a wide range of larger residential and commercial hydronic systems. Typical applications include hydronic heating, in-floor radiant, snow melt, high pressure drop boilers, outdoor wood boilers, chilled water cooling, geothermal heat pumps, primary/secondary loops and hydro air fan coils. The Stainless Steel 2400 Series should be used for open, domestic water recirculation systems. The unitized, carbon/silicon-carbide mechanical seal is easy to service in only a few minutes. Features:Compact, space saving designPowerful close-coupled, maintenance free motorSuperior efficiency, high starting torquePermanently lubricated, sealed for life bearingsRugged 1/2" Stainless Steel ShaftCarbon/Silicon-Carbide mechanical seal for long lifeUniversal flange to flange dimensions - Ideal for retrofitsAnti-Condensate design for chilled waterDual electrical knock-outsDual pressure taps, suction/discharge